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Finding the Fourth Proportional to 570,276.20, 787,005.97 and 315,627.32

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Solution

The fourth proportional to 570,276.20, 787,005.97 and 315,627.32 is: 435,579.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,276.20 : 787,005.97 = 315,627.32 : x
  2. Step 2: Convert to fraction form
    570,276.20/787,005.97 = 315,627.32/x
  3. Step 3: Cross multiply
    570,276.20x = 787,005.97 × 315,627.32
  4. Step 4: Simplify right side
    570,276.20x = 248,400,585,135.10
  5. Step 5: Solve for x
    x = 248,400,585,135.10/570,276.20
  6. Step 6: Final answer
    x = 435,579.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.